Cheapest return flights from Istanbul to Kathmandu in September from $492

AirHint found the following cheapest return flights from Istanbul (IST) to Kathmandu (KTM) in September 2025 (see full year).

Return flights

01 Sep - 08 Sep Air Arabia
10 Sep - 16 Sep Air Arabia
11 Sep - 18 Sep Air Arabia
05 Sep - 07 Sep Air Arabia
06 Sep - 08 Sep Air Arabia
01 Sep - 20 Oct Air Arabia
12 Sep - 19 Sep Air Arabia
22 Sep - 27 Sep Air Arabia
26 Sep - 17 Oct Pegasus Airlines
29 Sep - 17 Oct Air Arabia
28 Sep - 19 Oct Air Arabia
27 Sep - 17 Oct Air Arabia
27 Sep - 18 Oct Air Arabia
17 Sep - 31 Oct Air Arabia
11 Sep - 18 Sep Turkish Airlines direct
01 Sep - 08 Sep Turkish Airlines direct
10 Sep - 16 Sep Turkish Airlines direct
01 Sep - 20 Oct Turkish Airlines direct
28 Sep - 19 Oct Turkish Airlines direct
29 Sep - 17 Oct Turkish Airlines direct

Also check the deals for one-way flights from Istanbul to Kathmandu in September.

Skyscanner

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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